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<title>class Gem::Package::TarReader::Entry - rubygems: Ruby Standard Library Documentation</title>


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    <li ><a href="#method-c-open">::open</a>
    <li ><a href="#method-i-bytes_read">#bytes_read</a>
    <li ><a href="#method-i-close">#close</a>
    <li ><a href="#method-i-closed-3F">#closed?</a>
    <li ><a href="#method-i-directory-3F">#directory?</a>
    <li ><a href="#method-i-eof-3F">#eof?</a>
    <li ><a href="#method-i-file-3F">#file?</a>
    <li ><a href="#method-i-full_name">#full_name</a>
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    <li ><a href="#method-i-pos">#pos</a>
    <li ><a href="#method-i-pos-3D">#pos=</a>
    <li ><a href="#method-i-read">#read</a>
    <li ><a href="#method-i-readpartial">#readpartial</a>
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    <li ><a href="#method-i-seek">#seek</a>
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    <main role="main" aria-labelledby="class-Gem::Package::TarReader::Entry">
    <h1 id="class-Gem::Package::TarReader::Entry" class="class">
      class Gem::Package::TarReader::Entry
    </h1>

    <section class="description">
    
<p>Class for reading entries out of a tar file</p>

    </section>

      <section id="5Buntitled-5D" class="documentation-section">



        <section class="attribute-method-details" class="method-section">
        <header>
        <h3>Attributes</h3>
        </header>

          <div id="attribute-i-header" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">header</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              <p>Header for this tar entry</p>
              </div>
            </div>
            </section>


                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">new</span><span
                                class="method-args">(header, io)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Creates a new tar entry for <code>header</code> that will be read from <code>io</code></p>

                              <div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 36</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">io</span>)
  <span class="ruby-ivar">@closed</span> = <span class="ruby-keyword">false</span>
  <span class="ruby-ivar">@header</span> = <span class="ruby-identifier">header</span>
  <span class="ruby-ivar">@io</span> = <span class="ruby-identifier">io</span>
  <span class="ruby-ivar">@orig_pos</span> = <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">pos</span>
  <span class="ruby-ivar">@end_pos</span> = <span class="ruby-ivar">@orig_pos</span> <span class="ruby-operator">+</span> <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">size</span>
  <span class="ruby-ivar">@read</span> = <span class="ruby-value">0</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-c-open" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">open</span><span
                                class="method-args">(header, io) { |entry| ... }</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Creates a new tar entry for <code>header</code> that will be read from <code>io</code> If a block is given, the entry is yielded and then closed.</p>

                              <div class="method-source-code" id="open-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 18</span>
<span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier ruby-title">open</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">io</span>, <span class="ruby-operator">&amp;</span><span class="ruby-identifier">block</span>)
  <span class="ruby-identifier">entry</span> = <span class="ruby-identifier">new</span> <span class="ruby-identifier">header</span>, <span class="ruby-identifier">io</span>
  <span class="ruby-keyword">return</span> <span class="ruby-identifier">entry</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">block_given?</span>
  <span class="ruby-keyword">begin</span>
    <span class="ruby-keyword">yield</span> <span class="ruby-identifier">entry</span>
  <span class="ruby-keyword">ensure</span>
    <span class="ruby-identifier">entry</span>.<span class="ruby-identifier">close</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-bytes_read" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">bytes_read</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Number of bytes read out of the tar entry</p>

                              <div class="method-source-code" id="bytes_read-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 52</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">bytes_read</span>
  <span class="ruby-ivar">@read</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-close" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">close</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Closes the tar entry</p>

                              <div class="method-source-code" id="close-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 59</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">close</span>
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">closed?</span>
  <span class="ruby-comment"># Seek to the end of the entry if it wasn&#39;t fully read</span>
  <span class="ruby-identifier">seek</span>(<span class="ruby-value">0</span>, <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_END</span>)
  <span class="ruby-comment"># discard trailing zeros</span>
  <span class="ruby-identifier">skip</span> = (<span class="ruby-value">512</span> <span class="ruby-operator">-</span> (<span class="ruby-ivar">@header</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">%</span> <span class="ruby-value">512</span>)) <span class="ruby-operator">%</span> <span class="ruby-value">512</span>
  <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">read</span>(<span class="ruby-identifier">skip</span>)
  <span class="ruby-ivar">@closed</span> = <span class="ruby-keyword">true</span>
  <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-closed-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">closed?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Is the tar entry closed?</p>

                              <div class="method-source-code" id="closed-3F-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 73</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">closed?</span>
  <span class="ruby-ivar">@closed</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-directory-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">directory?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Is this tar entry a directory?</p>

                              <div class="method-source-code" id="directory-3F-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 116</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">directory?</span>
  <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">typeflag</span> <span class="ruby-operator">==</span> <span class="ruby-string">&quot;5&quot;</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-eof-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">eof?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Are we at the end of the tar entry?</p>

                              <div class="method-source-code" id="eof-3F-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 80</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">eof?</span>
  <span class="ruby-identifier">check_closed</span>

  <span class="ruby-ivar">@read</span> <span class="ruby-operator">&gt;=</span> <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">size</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-file-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">file?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Is this tar entry a file?</p>

                              <div class="method-source-code" id="file-3F-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 123</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">file?</span>
  <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">typeflag</span> <span class="ruby-operator">==</span> <span class="ruby-string">&quot;0&quot;</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-full_name" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">full_name</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Full name of the tar entry</p>

                              <div class="method-source-code" id="full_name-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 89</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">full_name</span>
  <span class="ruby-keyword">if</span> <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">prefix</span> <span class="ruby-operator">!=</span> <span class="ruby-string">&quot;&quot;</span>
    <span class="ruby-constant">File</span>.<span class="ruby-identifier">join</span> <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">prefix</span>, <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">name</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">name</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">ArgumentError</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">e</span>
  <span class="ruby-identifier">raise</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">e</span>.<span class="ruby-identifier">message</span> <span class="ruby-operator">==</span> <span class="ruby-string">&quot;string contains null byte&quot;</span>
  <span class="ruby-identifier">raise</span> <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Package</span><span class="ruby-operator">::</span><span class="ruby-constant">TarInvalidError</span>,
        <span class="ruby-string">&quot;tar is corrupt, name contains null byte&quot;</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-getc" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">getc</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Read one byte from the tar entry</p>

                              <div class="method-source-code" id="getc-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 104</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">getc</span>
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">eof?</span>

  <span class="ruby-identifier">ret</span> = <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">getc</span>
  <span class="ruby-ivar">@read</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">ret</span>

  <span class="ruby-identifier">ret</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-length" class="method-detail method-alias">
                            <div class="method-heading">
                              <span class="method-name">length</span><span
                                class="method-args">()</span>
                            </div>

                            <div class="method-description">
                              

                            </div>


                            <div class="aliases">
                              Alias for: <a href="Entry.html#method-i-size">size</a>
                            </div>
                          </div>

                  <div id="method-i-pos" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">pos</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>The position in the tar entry</p>

                              <div class="method-source-code" id="pos-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 137</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">pos</span>
  <span class="ruby-identifier">check_closed</span>

  <span class="ruby-identifier">bytes_read</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-pos-3D" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">pos=</span><span
                                class="method-args">(new_pos)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Seek to the position in the tar entry</p>

                              <div class="method-source-code" id="pos-3D-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 146</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">pos=</span>(<span class="ruby-identifier">new_pos</span>)
  <span class="ruby-identifier">seek</span>(<span class="ruby-identifier">new_pos</span>, <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_SET</span>)
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-read" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">read</span><span
                                class="method-args">(maxlen = nil)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Reads <code>maxlen</code> bytes from the tar file entry, or the rest of the entry if nil</p>

                              <div class="method-source-code" id="read-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 159</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">read</span>(<span class="ruby-identifier">maxlen</span> = <span class="ruby-keyword">nil</span>)
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">eof?</span>
    <span class="ruby-keyword">return</span> <span class="ruby-identifier">maxlen</span>.<span class="ruby-identifier">to_i</span>.<span class="ruby-identifier">zero?</span> <span class="ruby-operator">?</span> <span class="ruby-string">&quot;&quot;</span> <span class="ruby-operator">:</span> <span class="ruby-keyword">nil</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-identifier">max_read</span> = [<span class="ruby-identifier">maxlen</span>, <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">-</span> <span class="ruby-ivar">@read</span>].<span class="ruby-identifier">compact</span>.<span class="ruby-identifier">min</span>

  <span class="ruby-identifier">ret</span> = <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">read</span> <span class="ruby-identifier">max_read</span>
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">ret</span>.<span class="ruby-identifier">nil?</span>
    <span class="ruby-keyword">return</span> <span class="ruby-identifier">maxlen</span> <span class="ruby-operator">?</span> <span class="ruby-keyword">nil</span> <span class="ruby-operator">:</span> <span class="ruby-string">&quot;&quot;</span> <span class="ruby-comment"># IO.read returns nil on EOF with len argument</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-ivar">@read</span> <span class="ruby-operator">+=</span> <span class="ruby-identifier">ret</span>.<span class="ruby-identifier">size</span>

  <span class="ruby-identifier">ret</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-readpartial" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">readpartial</span><span
                                class="method-args">(maxlen, outbuf = &quot;&quot;.b)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="readpartial-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 175</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">readpartial</span>(<span class="ruby-identifier">maxlen</span>, <span class="ruby-identifier">outbuf</span> = <span class="ruby-string">&quot;&quot;</span>.<span class="ruby-identifier">b</span>)
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">eof?</span> <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-identifier">maxlen</span> <span class="ruby-operator">&gt;</span> <span class="ruby-value">0</span>
    <span class="ruby-identifier">raise</span> <span class="ruby-constant">EOFError</span>, <span class="ruby-string">&quot;end of file reached&quot;</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-identifier">max_read</span> = [<span class="ruby-identifier">maxlen</span>, <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">-</span> <span class="ruby-ivar">@read</span>].<span class="ruby-identifier">min</span>

  <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">readpartial</span>(<span class="ruby-identifier">max_read</span>, <span class="ruby-identifier">outbuf</span>)
  <span class="ruby-ivar">@read</span> <span class="ruby-operator">+=</span> <span class="ruby-identifier">outbuf</span>.<span class="ruby-identifier">size</span>

  <span class="ruby-identifier">outbuf</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-rewind" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">rewind</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Rewinds to the beginning of the tar file entry</p>

                              <div class="method-source-code" id="rewind-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 244</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">rewind</span>
  <span class="ruby-identifier">check_closed</span>
  <span class="ruby-identifier">seek</span>(<span class="ruby-value">0</span>, <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_SET</span>)
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-seek" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">seek</span><span
                                class="method-args">(offset, whence = IO::SEEK_SET)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Seeks to <code>offset</code> bytes into the tar file entry <code>whence</code> can be IO::SEEK_SET, IO::SEEK_CUR, or IO::SEEK_END</p>

                              <div class="method-source-code" id="seek-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 192</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">seek</span>(<span class="ruby-identifier">offset</span>, <span class="ruby-identifier">whence</span> = <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_SET</span>)
  <span class="ruby-identifier">check_closed</span>

  <span class="ruby-identifier">new_pos</span> =
    <span class="ruby-keyword">case</span> <span class="ruby-identifier">whence</span>
    <span class="ruby-keyword">when</span> <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_SET</span> <span class="ruby-keyword">then</span> <span class="ruby-ivar">@orig_pos</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">offset</span>
    <span class="ruby-keyword">when</span> <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_CUR</span> <span class="ruby-keyword">then</span> <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">pos</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">offset</span>
    <span class="ruby-keyword">when</span> <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_END</span> <span class="ruby-keyword">then</span> <span class="ruby-ivar">@end_pos</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">offset</span>
    <span class="ruby-keyword">else</span>
      <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-string">&quot;invalid whence&quot;</span>
    <span class="ruby-keyword">end</span>

  <span class="ruby-keyword">if</span> <span class="ruby-identifier">new_pos</span> <span class="ruby-operator">&lt;</span> <span class="ruby-ivar">@orig_pos</span>
    <span class="ruby-identifier">new_pos</span> = <span class="ruby-ivar">@orig_pos</span>
  <span class="ruby-keyword">elsif</span> <span class="ruby-identifier">new_pos</span> <span class="ruby-operator">&gt;</span> <span class="ruby-ivar">@end_pos</span>
    <span class="ruby-identifier">new_pos</span> = <span class="ruby-ivar">@end_pos</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-identifier">pending</span> = <span class="ruby-identifier">new_pos</span> <span class="ruby-operator">-</span> <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">pos</span>

  <span class="ruby-keyword">return</span> <span class="ruby-value">0</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">pending</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span>

  <span class="ruby-keyword">if</span> <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-value">:seek</span>)
    <span class="ruby-keyword">begin</span>
      <span class="ruby-comment"># avoid reading if the @io supports seeking</span>
      <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">seek</span> <span class="ruby-identifier">new_pos</span>, <span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">SEEK_SET</span>
      <span class="ruby-identifier">pending</span> = <span class="ruby-value">0</span>
    <span class="ruby-keyword">rescue</span> <span class="ruby-constant">Errno</span><span class="ruby-operator">::</span><span class="ruby-constant">EINVAL</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-comment"># if seeking isn&#39;t supported or failed</span>
  <span class="ruby-comment"># negative seek requires that we rewind and read</span>
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">pending</span> <span class="ruby-operator">&lt;</span> <span class="ruby-value">0</span>
    <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">rewind</span>
    <span class="ruby-identifier">pending</span> = <span class="ruby-identifier">new_pos</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-keyword">while</span> <span class="ruby-identifier">pending</span> <span class="ruby-operator">&gt;</span> <span class="ruby-value">0</span> <span class="ruby-keyword">do</span>
    <span class="ruby-identifier">size_read</span> = <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">read</span>([<span class="ruby-identifier">pending</span>, <span class="ruby-value">4096</span>].<span class="ruby-identifier">min</span>)&amp;.<span class="ruby-identifier">size</span>
    <span class="ruby-identifier">raise</span>(<span class="ruby-constant">EOFError</span>, <span class="ruby-string">&quot;end of file reached&quot;</span>) <span class="ruby-keyword">if</span> <span class="ruby-identifier">size_read</span>.<span class="ruby-identifier">nil?</span>
    <span class="ruby-identifier">pending</span> <span class="ruby-operator">-=</span> <span class="ruby-identifier">size_read</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-ivar">@read</span> = <span class="ruby-ivar">@io</span>.<span class="ruby-identifier">pos</span> <span class="ruby-operator">-</span> <span class="ruby-ivar">@orig_pos</span>

  <span class="ruby-value">0</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-size" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">size</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="size-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 150</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">size</span>
  <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">size</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>

                            <div class="aliases">
                              Also aliased as: <a href="Entry.html#method-i-length">length</a>
                            </div>

                          </div>

                  <div id="method-i-symlink-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">symlink?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Is this tar entry a symlink?</p>

                              <div class="method-source-code" id="symlink-3F-source">
            <pre><span class="ruby-comment"># File rubygems/package/tar_reader/entry.rb, line 130</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">symlink?</span>
  <span class="ruby-ivar">@header</span>.<span class="ruby-identifier">typeflag</span> <span class="ruby-operator">==</span> <span class="ruby-string">&quot;2&quot;</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


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